My Cup of Tea
Sexual desire, including attraction requires ongoing nurturing and cultivation. For many, this can happen subconsciously; for others, they need to actively prioritize cultivating positive thoughts and experiences in relating to their partner. So very normal!
Regardless, operating with intention in how you are cultivating friendship and sexual desire in your relationship is a perspective from which you are bound to benefit — you simply will never know just how much of a benefit you and your relationship can experience, so you might as well try!